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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Milk ~305 days - dry 60 days prior to calving






2. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






3. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






4. 14-19 (17) days






5. (male) pushes the testes upward toward the body for warmth or protection






6. Important 'landmark' during palpation






7. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






8. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






9. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






10. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






11. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






12. Luteolysis happens because of the ____________ hormone






13. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






14. Help to signal hormone levels which we need both in the brain right next to each other.






15. Produce testosterone. located between the seminiferous tubules






16. ~305 days (altough often longer due to breeding difficulties)






17. 336 days






18. 1. brain function - 2. blood flow - 3. willing female






19. 19-23 (21) days






20. Microscopic - make sure not sterile - very few bulls are actually tested






21. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






22. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






23. 24 hours before end of estrus cycle






24. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






25. 265-285 days






26. 336 days






27. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






28. Larger the cow - more milk is produced; smaller the cow - less milk is produced






29. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






30. Way to know everything is alright with the breeding male






31. Provide nourishment for the developing sperm






32. To remove/separate testicles from animal's body before animal reaches puberty






33. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






34. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






35. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






36. The more stressed out the male is - the less sperm he is going to produce






37. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






38. When are steers and heifers weaned from bottle feeding?






39. When are steers and heifers weaned from bottle feeding?






40. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






41. 30 hours after estrus begins






42. Milk is 15% ________ and 85% __________.






43. Urinary calculi.






44. (FSH) causes egg to mature in females






45. Microscopic - make sure not sterile - very few bulls are actually tested






46. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






47. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






48. 14-19 (17) days






49. 19-23 (21) days






50. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm